阿姆河盆地卡洛夫-牛津阶碳酸盐岩储层沉积学特征

发布时间：2018-05-30 21:06

本文选题：层序地层学 + 地震沉积学　；参考：《石油与天然气地质》2017年04期

【摘要】：土库曼斯坦东北部的阿姆河盆地,是中亚地区最重要的含油气盆地之一。根据钻井岩心、测井、地震和分析化验资料,识别出3个三级层序,均由海侵和高位两个体系域构成。总体表现为水体向上变浅序列。通过应用层序地层学和地震沉积学研究方法,对阿姆河盆地卡洛夫-牛津阶碳酸盐台地储层沉积学特征进行了研究,划分出蒸发台地、局限台地、开阔台地、台地边缘礁滩、前缘缓斜坡和盆地6个相带。确定台地边缘生物礁、滩及前缘缓斜坡的坡内礁、滩相沉积最有利储层发育。储层岩性主要为厚壳蛤礁灰岩和各类颗粒灰岩,以发育保存良好的原生孔隙型与裂缝-孔隙型储层为主,认为台地边缘和斜坡内的储层分布明显受沉积期的有利礁、滩相带和埋藏期成岩作用等复合因素控制,这一特点可作为油气勘探潜力分析的依据。
[Abstract]:The Amu River basin in northeast Turkmenistan is one of the most important oil-gas basins in Central Asia. According to the drilling core, logging, seismic and analytical data, three third-order sequences are identified, all of which are composed of transgressive and high system tracts. The overall performance is the upward shallowness of the water body. By using sequence stratigraphy and seismic sedimentology, the sedimentary characteristics of Karov-Oxford stage carbonate platform reservoir in the Amr River basin are studied, and evaporative platform, limited platform, open platform, reef beach on the edge of platform are divided. There are 6 facies belts on the front edge of gentle slope and basin. It is determined that the reef in the platform margin, the reef in the beach and the slope in the front edge are the most favorable for reservoir development. The reservoir lithology is mainly composed of thick clam reef limestone and various granular limestone, mainly developed and preserved primary pore type and fracture pore type reservoir. It is considered that the distribution of reservoir in platform margin and slope is obviously affected by favorable reef of sedimentary period. The beach facies zone and diagenesis during burial period are controlled by complex factors, which can be used as the basis for oil and gas exploration potential analysis.
【作者单位】：成都理工大学油气藏地质及开发工程国家重点实验室;中国石油川庆钻探工程公司地质勘探开发研究院;陕西延长石油国际勘探开发工程有限公司;中国石油阿姆河天然气公司;中国石油青海油田分公司采油一厂;
【基金】：国家自然科学基金项目(41172120) 国家科技重大专项(2008ZX05030-003)
【分类号】：P618.13

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